Mercurial > hg > orthanc-stone
comparison Framework/Radiography/RadiographyLayer.cpp @ 410:6decc0ba9da5
rename RadiographyScene::Layer as RadiographyLayer
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 12 Nov 2018 15:52:03 +0100 |
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children | b85f635f1eb5 b70e9be013e4 |
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409:99c9b3238008 | 410:6decc0ba9da5 |
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1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2018 Osimis S.A., Belgium | |
6 * | |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU Affero General Public License | |
9 * as published by the Free Software Foundation, either version 3 of | |
10 * the License, or (at your option) any later version. | |
11 * | |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 * Affero General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Affero General Public License | |
18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 **/ | |
20 | |
21 | |
22 #include "RadiographyLayer.h" | |
23 | |
24 #include <Core/OrthancException.h> | |
25 | |
26 | |
27 namespace OrthancStone | |
28 { | |
29 static double Square(double x) | |
30 { | |
31 return x * x; | |
32 } | |
33 | |
34 | |
35 void RadiographyLayer::UpdateTransform() | |
36 { | |
37 transform_ = AffineTransform2D::CreateScaling(pixelSpacingX_, pixelSpacingY_); | |
38 | |
39 double centerX, centerY; | |
40 GetCenter(centerX, centerY); | |
41 | |
42 transform_ = AffineTransform2D::Combine( | |
43 AffineTransform2D::CreateOffset(panX_ + centerX, panY_ + centerY), | |
44 AffineTransform2D::CreateRotation(angle_), | |
45 AffineTransform2D::CreateOffset(-centerX, -centerY), | |
46 transform_); | |
47 | |
48 transformInverse_ = AffineTransform2D::Invert(transform_); | |
49 } | |
50 | |
51 | |
52 void RadiographyLayer::AddToExtent(Extent2D& extent, | |
53 double x, | |
54 double y) const | |
55 { | |
56 transform_.Apply(x, y); | |
57 extent.AddPoint(x, y); | |
58 } | |
59 | |
60 | |
61 void RadiographyLayer::GetCornerInternal(double& x, | |
62 double& y, | |
63 Corner corner, | |
64 unsigned int cropX, | |
65 unsigned int cropY, | |
66 unsigned int cropWidth, | |
67 unsigned int cropHeight) const | |
68 { | |
69 double dx = static_cast<double>(cropX); | |
70 double dy = static_cast<double>(cropY); | |
71 double dwidth = static_cast<double>(cropWidth); | |
72 double dheight = static_cast<double>(cropHeight); | |
73 | |
74 switch (corner) | |
75 { | |
76 case Corner_TopLeft: | |
77 x = dx; | |
78 y = dy; | |
79 break; | |
80 | |
81 case Corner_TopRight: | |
82 x = dx + dwidth; | |
83 y = dy; | |
84 break; | |
85 | |
86 case Corner_BottomLeft: | |
87 x = dx; | |
88 y = dy + dheight; | |
89 break; | |
90 | |
91 case Corner_BottomRight: | |
92 x = dx + dwidth; | |
93 y = dy + dheight; | |
94 break; | |
95 | |
96 default: | |
97 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
98 } | |
99 | |
100 transform_.Apply(x, y); | |
101 } | |
102 | |
103 | |
104 bool RadiographyLayer::Contains(double x, | |
105 double y) const | |
106 { | |
107 transformInverse_.Apply(x, y); | |
108 | |
109 unsigned int cropX, cropY, cropWidth, cropHeight; | |
110 GetCrop(cropX, cropY, cropWidth, cropHeight); | |
111 | |
112 return (x >= cropX && x <= cropX + cropWidth && | |
113 y >= cropY && y <= cropY + cropHeight); | |
114 } | |
115 | |
116 | |
117 void RadiographyLayer::DrawBorders(CairoContext& context, | |
118 double zoom) | |
119 { | |
120 unsigned int cx, cy, width, height; | |
121 GetCrop(cx, cy, width, height); | |
122 | |
123 double dx = static_cast<double>(cx); | |
124 double dy = static_cast<double>(cy); | |
125 double dwidth = static_cast<double>(width); | |
126 double dheight = static_cast<double>(height); | |
127 | |
128 cairo_t* cr = context.GetObject(); | |
129 cairo_set_line_width(cr, 2.0 / zoom); | |
130 | |
131 double x, y; | |
132 x = dx; | |
133 y = dy; | |
134 transform_.Apply(x, y); | |
135 cairo_move_to(cr, x, y); | |
136 | |
137 x = dx + dwidth; | |
138 y = dy; | |
139 transform_.Apply(x, y); | |
140 cairo_line_to(cr, x, y); | |
141 | |
142 x = dx + dwidth; | |
143 y = dy + dheight; | |
144 transform_.Apply(x, y); | |
145 cairo_line_to(cr, x, y); | |
146 | |
147 x = dx; | |
148 y = dy + dheight; | |
149 transform_.Apply(x, y); | |
150 cairo_line_to(cr, x, y); | |
151 | |
152 x = dx; | |
153 y = dy; | |
154 transform_.Apply(x, y); | |
155 cairo_line_to(cr, x, y); | |
156 | |
157 cairo_stroke(cr); | |
158 } | |
159 | |
160 | |
161 RadiographyLayer::RadiographyLayer() : | |
162 index_(0), | |
163 hasSize_(false), | |
164 width_(0), | |
165 height_(0), | |
166 hasCrop_(false), | |
167 pixelSpacingX_(1), | |
168 pixelSpacingY_(1), | |
169 panX_(0), | |
170 panY_(0), | |
171 angle_(0), | |
172 resizeable_(false) | |
173 { | |
174 UpdateTransform(); | |
175 } | |
176 | |
177 | |
178 void RadiographyLayer::SetCrop(unsigned int x, | |
179 unsigned int y, | |
180 unsigned int width, | |
181 unsigned int height) | |
182 { | |
183 if (!hasSize_) | |
184 { | |
185 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
186 } | |
187 | |
188 if (x + width > width_ || | |
189 y + height > height_) | |
190 { | |
191 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
192 } | |
193 | |
194 hasCrop_ = true; | |
195 cropX_ = x; | |
196 cropY_ = y; | |
197 cropWidth_ = width; | |
198 cropHeight_ = height; | |
199 | |
200 UpdateTransform(); | |
201 } | |
202 | |
203 | |
204 void RadiographyLayer::GetCrop(unsigned int& x, | |
205 unsigned int& y, | |
206 unsigned int& width, | |
207 unsigned int& height) const | |
208 { | |
209 if (hasCrop_) | |
210 { | |
211 x = cropX_; | |
212 y = cropY_; | |
213 width = cropWidth_; | |
214 height = cropHeight_; | |
215 } | |
216 else | |
217 { | |
218 x = 0; | |
219 y = 0; | |
220 width = width_; | |
221 height = height_; | |
222 } | |
223 } | |
224 | |
225 | |
226 void RadiographyLayer::SetAngle(double angle) | |
227 { | |
228 angle_ = angle; | |
229 UpdateTransform(); | |
230 } | |
231 | |
232 | |
233 void RadiographyLayer::SetSize(unsigned int width, | |
234 unsigned int height) | |
235 { | |
236 if (hasSize_ && | |
237 (width != width_ || | |
238 height != height_)) | |
239 { | |
240 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageSize); | |
241 } | |
242 | |
243 hasSize_ = true; | |
244 width_ = width; | |
245 height_ = height; | |
246 | |
247 UpdateTransform(); | |
248 } | |
249 | |
250 | |
251 Extent2D RadiographyLayer::GetExtent() const | |
252 { | |
253 Extent2D extent; | |
254 | |
255 unsigned int x, y, width, height; | |
256 GetCrop(x, y, width, height); | |
257 | |
258 double dx = static_cast<double>(x); | |
259 double dy = static_cast<double>(y); | |
260 double dwidth = static_cast<double>(width); | |
261 double dheight = static_cast<double>(height); | |
262 | |
263 AddToExtent(extent, dx, dy); | |
264 AddToExtent(extent, dx + dwidth, dy); | |
265 AddToExtent(extent, dx, dy + dheight); | |
266 AddToExtent(extent, dx + dwidth, dy + dheight); | |
267 | |
268 return extent; | |
269 } | |
270 | |
271 | |
272 bool RadiographyLayer::GetPixel(unsigned int& imageX, | |
273 unsigned int& imageY, | |
274 double sceneX, | |
275 double sceneY) const | |
276 { | |
277 if (width_ == 0 || | |
278 height_ == 0) | |
279 { | |
280 return false; | |
281 } | |
282 else | |
283 { | |
284 transformInverse_.Apply(sceneX, sceneY); | |
285 | |
286 int x = static_cast<int>(std::floor(sceneX)); | |
287 int y = static_cast<int>(std::floor(sceneY)); | |
288 | |
289 if (x < 0) | |
290 { | |
291 imageX = 0; | |
292 } | |
293 else if (x >= static_cast<int>(width_)) | |
294 { | |
295 imageX = width_; | |
296 } | |
297 else | |
298 { | |
299 imageX = static_cast<unsigned int>(x); | |
300 } | |
301 | |
302 if (y < 0) | |
303 { | |
304 imageY = 0; | |
305 } | |
306 else if (y >= static_cast<int>(height_)) | |
307 { | |
308 imageY = height_; | |
309 } | |
310 else | |
311 { | |
312 imageY = static_cast<unsigned int>(y); | |
313 } | |
314 | |
315 return true; | |
316 } | |
317 } | |
318 | |
319 | |
320 void RadiographyLayer::SetPan(double x, | |
321 double y) | |
322 { | |
323 panX_ = x; | |
324 panY_ = y; | |
325 UpdateTransform(); | |
326 } | |
327 | |
328 | |
329 void RadiographyLayer::SetPixelSpacing(double x, | |
330 double y) | |
331 { | |
332 pixelSpacingX_ = x; | |
333 pixelSpacingY_ = y; | |
334 UpdateTransform(); | |
335 } | |
336 | |
337 | |
338 void RadiographyLayer::GetCenter(double& centerX, | |
339 double& centerY) const | |
340 { | |
341 centerX = static_cast<double>(width_) / 2.0; | |
342 centerY = static_cast<double>(height_) / 2.0; | |
343 transform_.Apply(centerX, centerY); | |
344 } | |
345 | |
346 | |
347 void RadiographyLayer::GetCorner(double& x /* out */, | |
348 double& y /* out */, | |
349 Corner corner) const | |
350 { | |
351 unsigned int cropX, cropY, cropWidth, cropHeight; | |
352 GetCrop(cropX, cropY, cropWidth, cropHeight); | |
353 GetCornerInternal(x, y, corner, cropX, cropY, cropWidth, cropHeight); | |
354 } | |
355 | |
356 | |
357 bool RadiographyLayer::LookupCorner(Corner& corner /* out */, | |
358 double x, | |
359 double y, | |
360 double zoom, | |
361 double viewportDistance) const | |
362 { | |
363 static const Corner CORNERS[] = { | |
364 Corner_TopLeft, | |
365 Corner_TopRight, | |
366 Corner_BottomLeft, | |
367 Corner_BottomRight | |
368 }; | |
369 | |
370 unsigned int cropX, cropY, cropWidth, cropHeight; | |
371 GetCrop(cropX, cropY, cropWidth, cropHeight); | |
372 | |
373 double threshold = Square(viewportDistance / zoom); | |
374 | |
375 for (size_t i = 0; i < 4; i++) | |
376 { | |
377 double cx, cy; | |
378 GetCornerInternal(cx, cy, CORNERS[i], cropX, cropY, cropWidth, cropHeight); | |
379 | |
380 double d = Square(cx - x) + Square(cy - y); | |
381 | |
382 if (d <= threshold) | |
383 { | |
384 corner = CORNERS[i]; | |
385 return true; | |
386 } | |
387 } | |
388 | |
389 return false; | |
390 } | |
391 } |